Remove sap npm registry (#26)

Dockerfile

@@ -5,8 +5,7 @@ FROM node:$BASE_IMAGE_TAG
 RUN apt-get update && \
     apt-get install -y chromium firefox-esr xvfb libxi6 libgbm1 libgconf-2-4 openjdk-11-jre && \
     rm -rf /var/lib/apt/lists/* /var/cache/apt/* && \
-    ln -s /usr/bin/chromium /usr/bin/google-chrome && \
-    npm config set @sap:registry https://npm.sap.com --global
+    ln -s /usr/bin/chromium /usr/bin/google-chrome
 
 # Workaround for https://npm.sap.com issue with open SSL in Debian Buster
 RUN CIPHERS="$(openssl ciphers)" && sed -i "s/DEFAULT@SECLEVEL=2/$CIPHERS:DH-RSA-AES256-SHA256/g" /etc/ssl/openssl.cnf